Hammerhead



FIG. 1 is a front top perspective view of a hammerhead, showing my new design;

FIG. 2 is another front top perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a front perspective view thereof.

The broken lines showing portions of the hammerhead and a hammer handle are included for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a hammerhead, as shown and described. 